Nannacara anomala Regan, 1905
Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.
Open encyclopedia reference
The goldeneye cichlid (Nannacara anomala) is a species of cichlid found in fresh water from the Aruka River in Guyana, to the Maroni River in Suriname. It is often found on flooded savannas near the coast. The male grows to a length of about 5.6 centimetres (2.2 in) while the female is somewhat smaller, and is thus regarded as a dwarf cichlid.
The male, under acidic conditions, adopts a greenish tinge along the length of its body, while the female puts on a black coat with a faint line running from her face to the middle of her tail, and in breeding condition, fades into a bright yellow in the stomach.
As youngsters, there is hardly any difference as a juvenile male does have the colouration of a female.
The only difference would be the presence of an extension at the back of the male's dorsal fin.
The goldeneye cichlid lives on a diet of crustaceans, insects, and other small animals.
Wikipedia contributors, Goldeneye cichlid; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T23:16:10.132660+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Nannacara anomala Regan, 1905
- Name authority
- Regan, 1905
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Teleostei
- Order
- Cichliformes
- Family
- Cichlidae
- Genus
- Nannacara
- Extinction status
- Not supplied by this source
Source habitat flags: Marine: no · Freshwater: yes · Terrestrial: no. These do not form a complete habitat description.
Classification family tree
Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumChordata
- subphylumVertebrata
- infraphylumGnathostomata
- parvphylumOsteichthyes
- gigaclassActinopterygii
- superclassActinopteri
- classTeleostei
- orderCichliformes
- familyCichlidae Bonaparte, 1835
- subfamilyCichlinae Bonaparte, 1835
- genusNannacara Regan, 1905
- speciesNannacara anomala Regan, 1905
Close classified relatives
These entries share the source’s genus, Nannacara. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Nannacara aureocephalus Allgayer, 1983 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Nannacara quadrispinae Staeck & Schindler, 2004 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Nannacara adoketa Kullander & Prada-Pedreros, 1993 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Nannacara bimaculata Eigenmann, 1912 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
| Nannacara taenia Regan, 1912 | CichlidaeChordata | Accepted speciesExtinction status not supplied |
Source literature & publication evidence
References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.
- Regan, C. T. (1905). A revision of the fishes of the South-American cichlid genera Acara, Nannacara, Acaropsis, and Astronotus. Annals and Magazine of Natural History (Series 7), v. 15 (no. 88) (art. 42): 329–347. https://doi.org/10.1080/03745480509443057 Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references
Origins, evidence & remaining research
Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.
Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record. A suitable sourced image remains to be added.
Dataset citation & attribution
This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11
Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.
Stable key: col:45M3J. Classification follows source parent identifiers. English common names may vary by region.